Table 4. Univariate and multivariate Cox proportional hazard regression to investigate factors associated with survival.
| Variable | Hazard ratio | 95% CI | p | |
|---|---|---|---|---|
| Univariate analysis | ||||
| Age | 1.26 | 1.07–1.50 | 0.006 | |
| Method (fixed vs. score) | 0.61 | 0.26–1.43 | 0.26 | |
| Definitive thyroid status | Hypothyroidism | 3.44 | 0.89–13.4 | 0.07 |
| Hyperthyroidism | 6.7 | 2.11–21.35 | 0.0013 | |
| Azotemia > 4 months after treatment | 0.87 | 0.33–2.28 | 0.77 | |
| Creatinine > 4 months after treatment | 1.002 | 1.00–1.004 | 0.07 | |
| Multivariate analysis | ||||
| Definitive thyroid status | Hypothyroidism | 3.57 | 0.91–13.99 | 0.07 |
| Hyperthyroidism | 6.42 | 2.00–20.53 | 0.002 | |
| Age | 1.09 | 0.85–1.39 | 0.52 | |